Courier Flights:Is it a thing of the past?

I've looked for courier flights in the past with no luck.  This about.com article explains the decline.

In its heyday, flying as a courier saved budget travelers thousands of dollars on overseas fares.

Travelers took flights between North America, Europe or Asia. They spent a small percentage of the prevailing fare on these one-way trips, and frequently received a similar deal on the way home.. Read more

Has anyone had any luck with courier flights?